MCCULLOCH. 19 



60b. S. irideus. Rainbow Trout. Id, Gibbons, P. Cal. Acad. Nat. Sci., 

 1855, p. 36; Id, Jord. & Evm., Fish. N. & Mid. Amer. i, 1896, p. 500, pi. 

 81, 216. (PI. vii.). 

 Successfully acclimatised in many rivers in various parts of the State, and 

 providing good sport for rod-fishermen. 



Attempts have been made at different times to acclimatise the Loch Leven 

 Trout (Salmo levenensis) , the Salmon Trout (S. trutta), the American Brook 

 Trout (Salvelinus fontinalis), and the Sockeye Salmon (Oncorhynehus nerka), 

 but according to Mr H. K. Anderson, of the State Fisheries Department, none of 

 these have thrived. 



XXXV. Family Argentinidae. 



61. Argentina Linn.. Syst. Nat. 10th ed., 1758, p. 315 (sphyraena). 



61a. A. elongata. Id. Hutton, A.M.N.H. (5) iii, 1879, p. 53. Id. Waite, 



Rec. Cantb. Mus. i. 1911, p. 161, pi. 24. (PI. vi.). 

 A small deep water species, occasionally taken by trawlers. 



XXXVI. Family Aplochitonidae. 



62. Prototroctes Gthr., B.M. Cat. Fish, v, 1864, p. 382 (marwna). 



62a. P. maraena. Australian Grayling. Id. Gthr., Tom. cit. Id. Waite, 



Rec. Austr. Mus. iv, 1902. p. 265, pi. 41. (PL vi.). 

 A Trout-like fish growing to 12 inches long, and sometimes occurring in shoals 

 in some coastal streams. 



XXXVII. Family Retropinnidae. 



63. Retropinna Gill, Proc. Acad. Philad. 1862, p. 14 (retro pinna). 



63a. R. semoni. Australian Smelt. Prototroctes semoni Weber, Zool. 

 Forschr. Austr. v, 1895, p. 274. B. semoni McCulloch, Rec. Austr. Mus. 

 xiii. 2, 1920, p. 49, pi. 11, 2-3. (PI. vi.). 

 A minute fish, about 3 inches long, abundant in both the coastal and inland 

 streams of the State Very closely allied to the New Zealand Whitebait. 



Sergeant Baker, Cucumber Fish, and Saury. Order INIOMI. 

 Differing from the Order Isospondyli in having the shoulder-girdle incom- 

 plete, there being no mesocoracoid arch. 



A. Body scaly; ventrals near the pectorals. 

 B. Maxilla expanded posteriorly. 



C. A broad movable supramaxillary bone; dorsal fin long. 



Family Aulopidae (No. xxxviii.) • 

 CC. No movable supramaxillary bone; dorsal fin short. 



Family Sudidae (No. xxxix.) . 

 BB. Maxillary narrow posteriorly, without supramaxillaries. 



Family Synodontidae (No. xl.) . 

 AA. Body naked; ventrals far behind the pectorals. 



Family Alepisauridae (No. xli.). 



